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P0693-COOLING FAN 2 RELAY CONTROL CIRCUIT LOW (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (A16) FUSED B+ CIRCUITS (N112) COOOLING FAN NO.2 RELAY CONTROL CIRCUIT OPEN (N112) COOOLING FAN NO.2 RELAY CONTROL CIRCUIT SHORTED TO GROUND HIGH SPEED RADIATOR FAN RELAY FRONT CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. HIGH SPEED RADIATOR FAN RELAY OPERATION Ignition on, engine not running. With a scan tool, actuate the High Speed Radiator Fan Relay. Is the Cooling Fan Relay operating? Yes >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 2 2. (A16) FUSED B+ CIRCUITS Turn the ignition off. Remove the High Speed Radiator Fan Relay. Using a 12-volt test light connected to ground, probe the (A16) Fused B+ circuits in the Relay connection. Is the voltage above 11.0 volts? Yes >> Go To 3 No >> Repair the open or short to ground in the (A16) Fused B+ circuits. Inspect the related fuse and repair as necessary. Perform BODY VERIFICATION TEST-VER 1. 9 - 748 ENGINE ELECTRICAL DIAGNOSTICS WK |